How can I learn math well!! Would it be nice for talented people to come and give advice??!!!

Mathematics is a basic discipline and a highly theoretical subject. To learn mathematics, you must first be interested, then you must be determined, and then you must be patient. Finally, study carefully.

Start with the basics – familiarize yourself with the skills – apply. It must have been practiced countless times. To learn mathematics well, you have to find a learning method that suits you and understand the characteristics of mathematics.

Memorize formulas, think more, dig more and do more problems, there is never a shortcut to mathematics, only practice, practice, and practice again to do four rounds of review: 1Fundamentals for a comprehensive review (see textbook).

2.Use mock exams to test your first round of revision. Analyze the existing problems in detail, and do a good job of reviewing the gaps 3

Review in sections. Do the same in the differences, the same in the differences. 4.

There are x people in 1 class, and the per capita donation is y yuan.

Then there are x+4 people in class 2, and the average donation per person is yuan.

The system of equations is xy=67

Solve the system of equations.

y=2 then, so the average donation per person in class 1 is 2 yuan, and the average donation in class 2 is yuan.

This question is a bit problematic, because the final calculation of the number of people in class 1 and the number of people in class 2 are not whole numbers).

There are x people in the class and y people in the class.

then y=x+4---1).

The average number of donations per class is 90 y

The average contribution per class is 67 x

So 90 y=

From (1) and (2) we get the value of xy.

Solution: Microwave ovens produced last year: 2400 (120%-1)=12000 (sets).

This year's production of microwave ovens: 12000 + 2400 = 14400 (sets).

Solution: Suppose x units were produced last year From the title: x+2400= solve x=12000 So: 14400 units this year, 12000 units last year.

Solution: Set up X units to be produced last year and Y units this year. Get equations 1 and 2: x+2400=y 120%x=y (then solve it yourself).

: Ninth graders make up the total number of choir members.

12. Eighth graders account for the total number of choirs.

14, then the number of seventh graders accounted for.

If there are x people in the 7th grade choir, the total number of people in the choir is 4x according to the title: 50 4x 55, then.

x 554, and the number can only be a positive integer, x=13 Answer: The number of 7th graders in the choir is 13

Solution: If the A-type carriage is arranged with X sections, then the B-type carriage is arranged with (50-X) sections, which is derived from the title.

35x+25(50-x) 1530 (1)15x+35(50-x) 1150 (2) solves this group of inequalities.

Then get the range of x (you can figure it out yourself).

Because x is a positive integer.

Then list all the values that x can take.

Bring in and see when x is equal to the smallest number.

That is, the solution to the least freight scheme: (1) If you need to match x A shapes, then you need to match B shapes (50-x), then there are 90x+40(50-x) 360030x+100(50-x) 2900 to get 30 x 32, so x=30 or 31 or 32

The first scheme: 32 A shapes, 18 B shapes;

The second scheme: 31 A shapes, 19 B shapes;

The third scheme: 30 A shapes, 20 B shapes (2) Calculate the cost of the three schemes respectively:

32 1000 + 18 1200 = 53600, 31 1000 + 19 1200 = 53800, 30 1000 + 20 1200 = 54000, through comparison, it can be seen that the cost of the first scheme is the lowest: type A ** is X yuan, type B ** is y yuan, then:

9x＋10y=1810 --1)

12x＋8y=1880 --2)

1) 4 (2) 5, get:

4(9x＋10y)－5(12x＋8y)=1810×4－1880×536x－60x=－2160

24x=－2160

x=90 substitute x=90 into (1) to get:

90×9＋10y=1810

810＋10y=1810

10y=1000

Y=100A** is 90 yuan, and B** is 100 yuan.

(1) If you set up a carriage x then b carriage (50-x) can list an inequality {35x+25(50-x) 1530{158x+35(50-x) 1150 to remove this inequality, (2) who is not used for w 10,000 yuan, then w= calculate w= because k= 0, so w decreases with the increase of x, so x takes the largest (just bring in the largest number of x in the value range in the first question).

This question is better than a gourd painting scoop I believe you can do it If you really can't add me.

I am not bad at mathematics, so let's talk about my personal experience and opinions:

1. Memorize the formula, and the examples must be studied thoroughly and thoroughly;

2. Develop a good habit of pre-study;

3. Make a mark of what you don't understand during the preview, so that you can focus on listening to it in class, and try to do the after-class exercises after the preview, so that you will have a clue when you listen to the teacher's lecture the next day. If you still don't understand after listening, you should ask the teacher in time.

4. This is the most important point, to review the knowledge learned before in time to deepen the memory. (Applicable to both arts and sciences).

What's the solution? Mainly on your own!